95 lines
3.9 KiB
Python
95 lines
3.9 KiB
Python
# Copyright 2013 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""The Extended Volumes API extension."""
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from oslo_log import log as logging
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from nova.api.openstack import api_version_request
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from nova.api.openstack import wsgi
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from nova import context
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from nova import objects
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LOG = logging.getLogger(__name__)
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class ExtendedVolumesController(wsgi.Controller):
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def _extend_server(self, server, req, bdms):
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volumes_attached = []
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for bdm in bdms:
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if bdm.get('volume_id'):
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volume_attached = {'id': bdm['volume_id']}
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if api_version_request.is_supported(req, min_version='2.3'):
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volume_attached['delete_on_termination'] = (
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bdm['delete_on_termination'])
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volumes_attached.append(volume_attached)
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# NOTE(mriedem): The os-extended-volumes prefix should not be used for
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# new attributes after v2.1. They are only in v2.1 for backward compat
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# with v2.0.
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key = "os-extended-volumes:volumes_attached"
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server[key] = volumes_attached
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@wsgi.extends
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def show(self, req, resp_obj, id):
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context = req.environ['nova.context']
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server = resp_obj.obj['server']
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bdms = objects.BlockDeviceMappingList.bdms_by_instance_uuid(
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context, [server['id']])
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instance_bdms = self._get_instance_bdms(bdms, server)
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self._extend_server(server, req, instance_bdms)
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@staticmethod
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def _get_instance_bdms_in_multiple_cells(ctxt, servers):
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instance_uuids = [server['id'] for server in servers]
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inst_maps = objects.InstanceMappingList.get_by_instance_uuids(
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ctxt, instance_uuids)
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cell_mappings = {}
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for inst_map in inst_maps:
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if (inst_map.cell_mapping is not None and
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inst_map.cell_mapping.uuid not in cell_mappings):
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cell_mappings.update(
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{inst_map.cell_mapping.uuid: inst_map.cell_mapping})
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bdms = {}
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results = context.scatter_gather_cells(
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ctxt, cell_mappings.values(), 60,
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objects.BlockDeviceMappingList.bdms_by_instance_uuid,
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instance_uuids)
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for cell_uuid, result in results.items():
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if result is context.raised_exception_sentinel:
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LOG.warning('Failed to get block device mappings for cell %s',
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cell_uuid)
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elif result is context.did_not_respond_sentinel:
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LOG.warning('Timeout getting block device mappings for cell '
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'%s', cell_uuid)
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else:
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bdms.update(result)
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return bdms
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@wsgi.extends
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def detail(self, req, resp_obj):
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context = req.environ['nova.context']
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servers = list(resp_obj.obj['servers'])
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bdms = self._get_instance_bdms_in_multiple_cells(context, servers)
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for server in servers:
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instance_bdms = self._get_instance_bdms(bdms, server)
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self._extend_server(server, req, instance_bdms)
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def _get_instance_bdms(self, bdms, server):
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# server['id'] is guaranteed to be in the cache due to
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# the core API adding it in the 'detail' or 'show' method.
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# If that instance has since been deleted, it won't be in the
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# 'bdms' dictionary though, so use 'get' to avoid KeyErrors.
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return bdms.get(server['id'], [])
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